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宁夏一共有玉米灌区9万hm2,近几年随着品种的更新和气候条件的变化,使得玉米病虫害越来越严重,其中玉米大斑病以及玉米叶螨等是影响产量最为严重、损失最为严重的病虫害。内蒙古河套灌区前套宁夏灌区,甘肃张掖后套宁夏灌区,使得黄河中上游地区成为宁夏灌区。宁夏灌区的自然环境条件为方便排灌、光照充足、土质肥沃、降雨少以及昼夜温差大等。这种完美的环境使得宁夏地区的玉米种植品质好、产量高、效益高。
Ningxia has a total of 90,000 hm2 of corn irrigation area. In recent years, with the change of varieties and the change of climatic conditions, maize pests and diseases have become more and more serious. The maize leaf spot and corn spider mites affect the most serious and the most serious losses Pests and diseases. Inner Mongolia Hetao Irrigation District set before the Ningxia Irrigation District, Gansu Zhangye set of Ningxia Irrigation District, making the middle and upper reaches of the Yellow River Ningxia Irrigation District. Ningxia irrigation natural environmental conditions for irrigation and drainage, adequate light, fertile soil, less rainfall and large temperature difference between day and night. This perfect environment makes Ningxia corn planting good quality, high yield, high efficiency.